With Samsung officially unveiling the Galaxy S5 at Mobile World Congress, Centre stage is its quad-core Snapdragon 805 processor, which runs at a blistering 2.5GHz. This chip, paired with 2GB of RAM, means the phone shouldn’t have any bother smoothly running any app you throw at it. One thing to note: it isn’t 64-bit – that’s probably going to be a feature of next year’s Samsung flagship.The phone comes with Android 4.4 KitKat and a new version of Samsung’s TouchWiz interface. There’s no word yet on whether or not a stock Android Google Play or Nexus edition will be be available.Meanwhile, a 2800mAh battery should give the S5 enough juice to easily last a day (Samsung claims 21 hours of talk time), and as with previous Galaxy S phones it’s swappable.You also get a choice between 16GB and 32GB of expandable storage (you can add up to 64GB extra via microSD), and there’s a microUSB 3.0 port for quick transfer speeds.On the connectivity front, plus a feature called Download Booster which uses both Wi-Fi and 3G&4G simultaneously to download files more speedily.